Square Errors
Mostrando 1-12 de 77 artigos, teses e dissertações.
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1. QUANTITATIVE SPECIATION OF THE LIQUID PHASE BY FTIR SPECTROSCOPY IN THE SYSTEM AMP-PZ-CO2-H2O
This work reports a multivariate calibration partial least square regression (PLS) model to quantify the liquid-phase concentrations of 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), bicarbonate, PZ monocarbamate, and PZ dicarbamate during the absorption/desorption process by Fourier Transform Mid-Infrared spectroscopy (mid-FTIR). The model could predic
Química Nova. Publicado em: 2022
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2. Absolute Configuration of (−)-Cubebin, a Classical Lignan with Pharmacological Potential, Defined by Means of Chiroptical Spectroscopy
This work describes the first determination of the absolute configuration (AC) of (−)-cubebin by means of electronic circular dichroism (ECD), supported by quantum chemical calculations. The comparison of experimental ECD with the corresponding quantum chemical prediction for the proper diastereoisomer resulted in the definitive assignment of the AC of the
J. Braz. Chem. Soc.. Publicado em: 2020-10
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3. 1H NMR and Chemometric Methods to Estimate the Octane Number in Brazilian C Gasolines
Brazilian gasoline type C can be purchased with octane number as the main difference. This quality parameter directly affects the price. Intermediate formulations may not be easily distinguished from conform samples due to similarity in visual appearance and physicochemical properties. The use of anhydrous ethanol as an additive also influences the octane va
J. Braz. Chem. Soc.. Publicado em: 2020-08
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4. MODELING YIELD, SOIL WATER BALANCE, AND ECONOMIC RETURN OF SOYBEAN UNDER DIFFERENT WATER DEFICIT LEVELS
ABSTRACT Evaluating the impacts of water stress on crop yield allows comparing irrigation management alternatives, aiming to ensure an economic return for the irrigated farms. Thus, the main objectives of this study were to model the soil water balance, deriving the crop coefficients, grain yield prediction, and economic return of soybean grown at different
Eng. Agríc.. Publicado em: 2020-08
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5. Prediction of quality parameters of food residues using NIR spectroscopy and PLS models based on proximate analysis
Abstract The real-time prediction in biorefinery industries has become essential. Models using partial least square regression (PLS) were developed to predict moisture, ash, volatile matter, fixed carbon and organic matter of coconut and coffee residues. In this study, 49 samples were collected and near infrared spectroscopy were applied to predict moisture,
Food Sci. Technol. Publicado em: 2020-06
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6. Considering the impact of observation error correlation in ensemble square-root Kalman filter
Abstract Data assimilation has been developed into an effective technology that can utilize a large number of multi-source unconventional data. It cannot only provide the initial field for the ocean numerical prediction model, but also construct the ocean reanalysis datasets and provide the design basis for the ocean observation plan. In data assimilation, t
Braz. j. oceanogr.. Publicado em: 02/12/2019
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7. Pattern of Logical Drug Prescription Among Iranian General Dental Practitioners
Abstract Objective: To determine the prescribing patterns of the general dental practitioners in Kerman province in Iran. Material and Methods: In this cross sectional study 1200 prescriptions, which were prescribed by general dentists in Kerman province during one-year period, were evaluated. Each prescription was assessed for the number of drugs per pres
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 31/10/2019
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8. Prediction of quality parameters of food residues using NIR spectroscopy and PLS models based on proximate analysis
Abstract The real-time prediction in biorefinery industries has become essential. Models using partial least square regression (PLS) were developed to predict moisture, ash, volatile matter, fixed carbon and organic matter of coconut and coffee residues. In this study, 49 samples were collected and near infrared spectroscopy were applied to predict moisture,
Food Sci. Technol. Publicado em: 28/10/2019
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9. Radiographic analysis the obturation’s quality in root canal treatment performed by a South Brazilian sample of undergraduate students
RESUMO Objetivo Investigar a qualidade dos tratamentos endodônticos realizados por alunos de graduação em odontologia. Métodos 274 dentes (excluindo molares) com endodontia realizada no Departamento de Endodontia da Universidade Federal de Santa Cataria durante 9 anos foram avaliados por dois examinadores calibrados. A avaliação foi baseada no tipo d
RGO, Rev. Gaúch. Odontol.. Publicado em: 12/09/2019
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10. Comparison of the accuracy of virtual and direct bonding of orthodontic accessories
RESUMO Introdução: técnicas convencionais, diretas ou indiretas, de colagem de acessórios ortodônticos falham em obter a posição ideal desses. Objetivo: comparar a acurácia da colagem virtual e da colagem direta de acessórios ortodônticos por vestibular. Métodos: uma configuração virtual única (modelo de manequim com Classe I dentária) s
Dental Press J. Orthod.. Publicado em: 05/09/2019
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11. Simulation and Prediction for a Satellite Temperature Sensors Based on Artificial Neural Network
ABSTRACT: Spacecrafts in space environment are exposed to several kinds of thermal sources such as radiation, albedo and emitted IR from the earth. The thermal control subsystem in spacecraft is used to keep all parts operating within allowable temperature ranges. A failure in one or many temperature sensors could lead to abnormal operation. Consequently, a
J. Aerosp. Technol. Manag.. Publicado em: 26/08/2019
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12. Performance of the Groenevelt and Grant Model for Fitting Soil Water Retention Data from Brazilian Soils
ABSTRACT The soil water retention curve (SWRC) is essential for vadose zone hydrological modeling and related applications. In 2004, Groenevelt and Grant (GRT) presented a mathematical model for describing the SWRC and reported its mathematical versatility and good fit to soils from a Dutch database. In order to evaluate the application of GRT to SWRCs of Br
Rev. Bras. Ciênc. Solo. Publicado em: 22/07/2019